Adtran INC.

901, Explorer Boulevard, Huntsville, AL 35806

LIKELY ACTIVELAST SEEN IN FEDERAL DATA OCT 2026 · 3 SOURCES

Operating signal within 24 months, or from a single source.

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What they make

Telephone Apparatus Manufacturing334210

Where it is

34.72140, -86.68467 · CENSUS TIGER

COUNTY

Madison County

METRO AREA

Huntsville, AL

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Every listed plant in Madison County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 sources hold this plant, and 11 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in RCRAINFO, TRIS · EPA site type STATIONARY.

SAM.gov entity registrationOPERATING
Record FJRMG6LQ7PM3 · first seen MAR 2026 · last seen OCT 2026
DOL Form 5500 retirement plan filingsOPERATING
Record 630918200|AL|35806|901 explorer blvd · first seen DEC 2024 · last seen DEC 2024
EPA Facility Registry ServiceEXISTENCE
Record 110003379656 · first seen DEC 2015 · last seen DEC 2015

IN MADISON COUNTY9 other plants share this one’s industry (Communications Equipment Manufacturing, NAICS 3342); 1 of them has a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name: EPA: ADTRAN INC · JUL 2026 · ON THIS PAGE; SAM.gov: ADTRAN INC. · ON THIS PAGE
Street addressSOURCES DISAGREE: EPA: 901 EXPLORER BLVD · JUL 2026; SAM.gov: 901, EXPLORER BOULEVARD · ON THIS PAGE
City: EPA: HUNTSVILLE · JUL 2026 · ON THIS PAGE; SAM.gov: HUNTSVILLE · ON THIS PAGE
State: EPA: AL · JUL 2026 · ON THIS PAGE; SAM.gov: AL · ON THIS PAGE
County (FIPS code): EPA: 01089 · SEP 2026
CoordinatesSOURCES DISAGREE: Census geocoder: 34.721402746705,-86.684667375312 · JUL 2026 · ON THIS PAGE; EPA: 34.72127,-86.68348 · JUL 2026
Employees (band): DOL: 500+ · DEC 2024
CAGE code: SAM.gov: 3VGZ4
Retirement plan filing (Form 5500): DOL: 877 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024
SAM registration expires: SAM.gov: 2027-03-06
State business registrationSOURCES DISAGREE: CO SOS: ADTRAN, INC., registered with the Colorado Secretary of State; Corporation formed in Delaware; registered 1994-08-10; active, annual report filed 2026-08-13 · AUG 2026; Sunbiz: ADTRAN, INC., registered with the Florida Department of State, Division of Corporations; Corporation formed in Delaware; registered 1998-01-28; active, annual report filed 2026-01-25 · JAN 2026; OR SOS: ADTRAN, INC., registered with the Oregon Secretary of State, Corporation Division; Corporation formed in Delaware; registered 2020-12-22; active · DEC 2020; TX Comptroller: ADTRAN, INC., registered with the Texas Comptroller of Public Accounts; Corporation; registered 1987-11-26; active · NOV 1987; VA SCC: ADTRAN, Inc., registered with the Virginia State Corporation Commission; Corporation formed in Delaware; registered 1999-10-06; active · OCT 1999

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